Spatial and temporal evolution of ionic fragments produced by deep core-level ionization
Multiply charged molecules fragment under Coulomb repulsion, leaving characteristic fingerprints in ensuing electronic decay. Using K-shell ionization of HCl as a benchmark, we identify metastable intermediates that persist to internuclear separations beyond 100 a.u., where weakened Coulomb interactions enable the emergence of narrow atomic lines, while short-lived states decay at smaller separations, producing broad, red-shifted backgrounds. This work provides a previously missing dynamical description of coupled electronic and nuclear evolution in the Coulomb fragmentation regime.
Authors
- J. Liu
- R. Püttner (ORCID: https://orcid.org/0000-0002-8761-6873)
- Victor Kimberg (ORCID: https://orcid.org/0000-0003-1269-8760)
- D. Céolin (ORCID: https://orcid.org/0000-0002-5660-137X)
- T. Marchenko (ORCID: https://orcid.org/0000-0002-9015-3339)
- M. N. Piancaśtelli (ORCID: https://orcid.org/0000-0003-3303-7494)
- K. Jänkälä (ORCID: https://orcid.org/0000-0002-4032-3125)
- Nicolas Sisourat (ORCID: https://orcid.org/0000-0002-8567-5263)
- Renaud Guillemin
- Anonymous
- Faris Gel'mukhanov
- Marc Simon
Institutions
- North China Electric Power University (CN)
- Synchrotron soleil (FR)
- Sorbonne Université (FR)
- Laboratoire de Chimie Physique - Matière et Rayonnement (FR)
- Laboratoire Médiations (FR)
- Siberian Federal University (RU)
- Federal Medical-Biological Agency (RU)
- Freie Universität Berlin (DE)
- KTH Royal Institute of Technology (SE)
- University of Oulu (FI)
Publication Details
- Journal
- Physical review. A/Physical review, A
- Published
- 2026-01-02
- DOI
- https://doi.org/10.1103/6bdq-fwrd
- Citations
- 1
- Primary Topic
- Atomic and Molecular Physics
- Type
- article
- Field-Weighted Citation Impact
- 31.39